Gearing.



APPLiCATION F LED JULY 11' KHZ.

Patemw d May 9, 1918 2 SHEETS SHEET 1.

1 w m 0 u ad Wbbnemo err ne JAMES M. THOMPSON, OF MILWAUKEE, WI3CONSIN, AS'SZIGNGTF. 'lt} LUTHER GRINDER MFG. C0,, OF:MILWAUKEE, WISCONSIN, A CGRPOBAEIQN OF WISCONSIN.

GEARING.

Specification of Letters resent.

Application filed July 1?, i812. Serial No. 709,953.

To all whom it may concern.-

Be it known that I, JAMES M. TrioMrsol., n, citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Viscoosin, have invented new and useful Improvements in Gearing, of which the following is specification.

My invention relates to improvements in grinding mechanism;

In a former patent dated June 6, 1911, and numbered 994,216, I have shown and de scribed means for pivotally connecting the casing of the driving mechanism of a grind ing wheel with a fixed support,-whereby said casing may be rotatively adjusted about a pivotal axis and the grinding wheel held at any desired angle, the principal object of such construction being to allow adjustments of the grinding wheel with its side face in either a vertical or a horizontal plane.

The object of my present invention is to provide means whereby a substantially universal adjustment of the grinding wheel may be secured, rotative adjustments being" possible about two axes at right angles to each other.

A. further object is to provide means whereby the grinding wheel casing, or a curved member connected therewith, may be socketed in a suitable fixed support, (to permit one of said adjustments), in such a mannor as to provide a segmental bearing surface of considerable area, thus avoiding the vibration which is experienced in the operation of a grinding wheel where the casing is supported by an ordinary pivotal conncctlon.

A further object of my invention is to provide means whereby the grinding wheel may be adjusted in a circle transverse to that described by the handle.

In the drawing-Figure 1 is a plan view of my improved grinding wheel structure show ing the grindingwheel and a portion of the driving mechanism and casing in horizontal section. Fig. 2 is a front elevation, showing the casing partially in section. Fig. )3 is a sectional view, drawn on line, 1r-m of Fig. 2, showin, a portion of the casing for the driving near wheel in its relation to the supporting bearing member. l' lgr. l is a front elevation, slmwing a moo lieal form of construction.

Like parts are identified by the same referenw characters views.

The crank 11, worm I or m e ,worm wheel E, worm and. worm Sliz'i the grinding wheel beingi astaponthe si t '1}. The gearniembers are inclosed in a .uitable casing, and that portion of the casing H, which incloses the driving worm gear C, is of a generally cylindrical form.

The-casing i.ember I1. is supported by a bearing flange I and a segmental bearing shield J, the parts I and 3 being preferably formed integrally and the shield J is provided with integralclamping, arms K. An ordinary clamping set screw M has threaded bearing in an aperture through a clamping arm L, which projects from the lower througnout the several n wl drf from the near Wheel C,

portion of the bearing flange I. At its upper-end, th" screw M is provided with an ordinary swlveled clamping cap N, cooper sting with the arms K, whereby the support,

comprising the men'xb" 's I and J, may be clamped to a table. The periphery of the casing H is provided with a segmental flange 0, and the flange I is provided with outwardly projecting}; ears parallel with the flange O. The flange Q is provided with segmental slots (,2v and a clampingbolt R passes through each of these slots and through one or the ears P. These bolts R are provided with thumb nuts S, whereby the ears P and flanges U may be rigidly bound together in any desired position of rotative adjustment of the casing member H.

The casing" member 0, which incloses the gear wheel E, is also provided with bearings for the shaft G and has a hub e, rotatively mounted upon the tubular casing member h, which receives the worm shaft D. The cas ing member h is integrally connected with the casing member II, and is provided with a flange (1 against which the hub 6 seats. It'will therefore be apparent that the casing' member 6 and the grinding wheel memher. have s iveled adjustment upon the upper end portion oi" the casing member in A set screw 1 is employed for locking the hub c to the member 71 in desired position of rotative adjustment. By revolving the casing men'iher it around the crank shaft B as a center, or around any other center of revolution about which the casing memher 15. ronmreiy adiajistahie, and oiso zidji ing huh otatively upon the Iiibiiibfii ii, ure :1. snestantiaiiy nnwersei adjustment of the grinding wheeifwherehy the may be h. d in any de ed pest tion suitnbie for the grinding operation to he performed.

het'orring to Fig. 4, it will be observed that the construction is substantially the some as that shown in Fig. with the exception that a shield J, corresponding to the shield J in Fig. 2, also serves as the rear and side wail of the casing H. In this construction, ears S may be formed on the casing member H and arranged to pro ject through slots Q in the overlapping rim flange on the rear wall or shield J. Wedge members T extending through suit able holes in these ears S are employed for locking the parts together in any desired position of adjustment.

Vihen it desired change the adjustment, thumb nuts are ioosemd and the grinding whee untii the grindii desired angis sition by 1219 n.

iVhiie i locked pm shieid A: I do not re d.

ins specific eons ,rnetion he i'oii znred, the form and shone of the mute. .iy enyja hearing members being ,regra nonessentiei, sdthongh the specific rfoz-rn shown and is preferred for grindi wheels having gem? casings f the gsnorei form illustriited in the drawings. The supporting hearing member I is "orcfernbiy curved in the arc of a circie desi'zrihed from the crank shaft center, out this is not essential. It Wiii he observed that in the construe-- tion iiiustrnted, the shaft D is iocated at crankshaft B and the shaft G is too: ht engies to the shaft 1) and laterally oii'sct therefrom. SK ingi'ng the on 4;; member (a to carry the grind ing wheei rem-wsrdiy to a position. at ri it :mgies to that in which it is iiiuftrated in the drawings, or paraiiei with the driving wormwheei C, it is obvious that shaft G Wiii on up}! a position netnf. shaft D on iine extending through the crank shaft. The grinding W fheei wiii thns he supported from a. point as nearly above the crank shaft as possible, and as distant from. the crank as is possible. in thi pes' ion, rotat're adjustments may he made upon the supporting bearing shieid 6' Without resdjnstingz the casing member 6 upon the :2 member it, except when it is desired to swing the gr iding wheel to- Ward 2. howl. 1 piano to faoiiitete the the worm' another onsingmem'ner rotatably adjustabie upon the first mentioned casing member, to swing in a different plane which the first mentioned casswings upon said fixed Sn and adapted from that in in member port.

. e tip-on the first mentioned easing moth and s wing in a iiii'ercnt piano from the first menupon :seid

A barking devices fixed zapmrt, togeti'mfor securing the at ..i members in fixed rein-tints to iehefgher in any desired posi tion of gidpist t.

A gr ndin wheel structure compristhe "9% on of a fixed support, a casing" member iotatively connected with said fixed support and provided with Wheel driving connections, another casing mom berswiveicd upon the first mentioned casing member about the axis of one of said driving connections, driven gear members mounted in the swiveied casing member, and means for ioeking said casing members to each other and to the fixed support in any desired position of adjustment. 7 i. The combination with a gear inolosing casing member, of s fixed support for the casing men )er, rnenns-for rotativeiy edgnsting the casing member thereon, another easing memher'hitqing swiveied connection with the first mentioned casing member on a iosto that'aoout which casing member is ad- Ki. SQQQOYQ, and means easing memb'ers tohgsch :(1 position of adjustment.

driving mechanism, of a rotatably adjustaoie casing member for the driving meehanism, a supportin clamping bracket pro vided with a curved bearing surface, and ieans for locking the part of said bracket having said beefing surface to one side face oi the casing member eta plurality of points 12% .o fixed support in any He along a curved line sufficiently distant from the axis of rotatable adjustment to securely hold the casing member in any given position of adjustment.

6. The combination with a gear casing having a peripherally curved bearing memher, of a fixed support provided with a table engaging clamp and having a bearing member adapted to fit the casing" bearing, and means for locking said hearing mem her and easing tofletheiz 7. 'Iheemnhinmrion with aeyi ndriraicaeing, memi'ier for grinding wheel (hiving mechanism, of a curved hearing memher adapted to fit the periphery of said earsing member and having a portion adapted to bear against the side Wall of said casing member, and means for securing the casing member to said bearing member.

The eon'ibination with a easing 111 5171 her adapted to support the driving: mech" anism of n grinding: wheel and hnvinv a try iindrieniiy curved outer surface 13 (H'idfiii with a curved prujertimg rih, n curved hearing: member adapted to rereiYe the outer surface of the easing member; and (lamp ing projections on the curved hearing: memher uda 'ited to engage said rib,

9. The combination withn grindingwheei tubing, of a driving mnnin motion illilflf? mitting eonneetions, and n pair of caning members indexing: said motion transmitting connections, one of Said casing members he inn offset from the other in a direction to support a grinding wheel at a point dis. ant from the circle described by the crank.

10. The combination with a grinding wheei easing of a driving crank shaft 3 worm wheei mounted thereon, a motion transmitting worm shaft at right angles to the (crank shaft, a worm wheei mom? i on sui transmitting v hziffl, nnoti'ier worm shaft driver: by said hint h'ientioned norm wheel 1- ried to support a grinding whoeL, uni hing members inclining mid worm n" and shafts and suprmrting the grinding wheel shaft with its Wheel receiving outer end at a point distant from the plane in which the flank revolver;

ii. The combination with a grinding \vheei easing, of a driving crank and tion transmitting connections therefor, i a pair of easing members inoiosing said rim: transmitting: connections: the of easing inen'ihers being mounted for to adjmtment ripen the other i4 :1 piene twine erse to tint in v hieh the hiring-i Qwnk :"1 

